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How do I find out the screen size of my laptop?

Find out in seconds how many inches your laptop screen is with these simple, accurate methods.

Ecoportatil
Updated: 14/10/2025 222709
How do I find out the screen size of my laptop?
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When buying a refurbished laptop, one of the most important features is the screen size. However, it's very common not to know the screen size of your current laptop, which can be a problem when you want to buy a case, a screen protector, or simply compare models for a future purchase.

Don't worry, it's a very common question and has a simple solution. If you've ever wondered, "How do I find out how many inches my laptop screen is?", you're in the right place. In this definitive guide, we'll show you different ways to easily and quickly find out your screen size.

What do we mean by the inches of a screen?

Before we begin, it's essential to clarify this concept. When we talk about the screen size of a laptop, we're referring to the diagonal measurement of its display. This measurement, a standard across the entire technology industry, is expressed in inches and is one of the key factors that defines both the portability of the device and the visual experience it offers the user.

Knowing this information will help you choose your next device and buy compatible accessories. Here are four foolproof methods to find out.

Method 1: Check your laptop's box or user manual

The most direct and reliable way to find out the screen size of your laptop is to consult the original product documentation. If you still have the box, the technical specifications, including the screen size, are likely listed on one of the labels. The same applies to the user manual, whether it's a physical or digital copy.

If you don't have them handy, no problem. Search for your exact laptop model online; the digital manual will almost certainly be available for download on the manufacturer's official website.

Method 2: Measure the screen diagonal yourself

If you don't have the documentation, the most practical method is to measure it yourself. It's a universal solution, regardless of the brand or model. You just need a measuring tape or ruler. Follow these simple steps to find out the size of your laptop screen:

  1. Measure the screen diagonally, from one bottom corner to the opposite top corner (for example, from the bottom-left corner to the top-right corner).
  2. Make sure to measure only the visible part of the screen (the glass where the image is displayed), without including the plastic frame or bezel that surrounds it.
  3. The measurement you get will be in centimeters. To convert it to inches, which is the standard, simply divide the result by 2.54.

For example, if the diagonal of your screen measures 39.6 cm, dividing that number by 2.54 gives 15.6. Therefore, your laptop is 15.6 inches.

To make things even easier for you, here's a conversion chart with the most common sizes you'll find on the market:

InchesCentimeters
11.6"29.46 cm
12.5"31.75 cm
13.3"33.78 cm
14"35.56 cm
15.6"39.62 cm
17.3"43.94 cm

Most common screen sizes for laptops and notebooks

Although many intermediate sizes exist, the most common dimensions that define the format of laptops are:

  • 13.3 inches: These are the ultimate ultrabooks, ideal for those who prioritize maximum mobility and travel constantly.
  • 14 inches: Considered by many to be the perfect balance between portability and visual comfort for working.
  • 15.6 inches: The most popular and versatile standard size, perfect for both everyday work and multimedia entertainment.
  • 17.3 inches: These laptops are more geared towards gaming or serving as a desktop replacement, offering an immersive visual experience.

Person measuring the diagonal of a laptop screen to find out its size in inches

You might be interested in: Tips for buying a laptop!

Method 3: Search for your laptop model online

Every laptop, whether it's HP, Dell, Lenovo, or any other brand, has a specific model number. This identifier is usually printed on a sticker on the bottom of the laptop. Look for it (it might be something like "HP Pavilion 15-eh1002ns" or "Dell XPS 13 9310").

Once you have it, simply enter that model number into Google. The first few pages of results will show you the device's full technical specifications, including the screen size in inches. This is a very accurate way to answer the question, "What size screen does my laptop have?"

Method 4: Check the operating system information

Your operating system can also give you clues about your laptop's screen size, although it often displays the resolution rather than the physical dimensions. Even so, it's useful information that can help you find the answer.

On Windows (10 and 11):

  • Right-click on any empty space on the desktop and select "Display settings".
  • Within the window that opens, scroll down and click on the "Advanced display settings" option.
  • There you'll see detailed information about the display, which often includes the model name. With that information, you can do a quick internet search to find out the screen size of your laptop.

On macOS:

  • This is the most direct method. Click the Apple menu (the apple icon) in the upper-left corner and select "About This Mac".
  • In the "Displays" tab, the system will directly indicate the size. For example: "Built-in 13.3-inch display."

Why is it important to know the screen size of my laptop in inches?

Knowing this information is crucial for several practical reasons that go beyond mere curiosity. First, it allows you to choose the laptop size that best suits your needs. If you travel frequently or need to carry your computer with you daily, a 13- or 14-inch model is ideal for its portability. Conversely, if you primarily use it in a fixed location like your home or office for working with multiple windows or watching movies, a 15- or 17-inch model will offer greater visual comfort, similar to what you might get with inexpensive PC monitors.

Furthermore, knowing your laptop's screen size is essential for purchasing compatible accessories, such as laptop bags, sleeves, backpacks, privacy filters, or even screen protectors. Knowing your laptop's exact screen size in inches will prevent returns and incorrect purchases.

Now that you know how to find out, you can make an informed decision and explore our refurbished laptops to find the perfect size for you.

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